scholarly journals EXPERIMENTAL STUDY ON THE BRITTLE FRACTURE OF BEAM-TO-COLUMN WELDED JOINT WITH END-TAB AND BACKING STRIP

1983 ◽  
Vol 334 (0) ◽  
pp. 58-69
Author(s):  
MORIHISA FUJIMOTO ◽  
TADAO NAKGOMI ◽  
JONGRAK KIM ◽  
MASAYASU TAGA
Keyword(s):  
Experimental Study ◽  
Brittle Fracture ◽  
Welded Joint

scholarly journals EXPERIMENTAL STUDY ON BRITTLE FRACTURE OF BUCKLING-RESTRAINED BRACES

2013 ◽  
Vol 78 (691) ◽  
pp. 1613-1620
Author(s):  
Ryunosuke ITO ◽  
Tadao NAKAGOMI ◽  
Masatoshi MURAI ◽  
Mamoru IWATA ◽  
Ryota WAKAI
Keyword(s):  
Experimental Study ◽  
Brittle Fracture ◽  
Buckling Restrained Braces

An experimental study on atomic-level unified criterion for brittle fracture

2020 ◽  
Vol 206 ◽  
pp. 1-8
Author(s):  
Kai Huang ◽  
Takashi Sumigawa ◽  
Takahiro Shimada ◽  
Shuhei Tanaka ◽  
Youhei Hagiwara ◽  
...  
Keyword(s):  
Experimental Study ◽  
Brittle Fracture ◽  
Atomic Level

Fracture Assessment of Welded Joint With Geometrical Discontinuity Using the Weibull Stress

2006 ◽  
Author(s):  
Satoshi Igi ◽  
Takahiro Kubo ◽  
Masayoshi Kurihara ◽  
Fumiyoshi Minami
Keyword(s):  
Fracture Toughness ◽  
Brittle Fracture ◽  
Welded Joint ◽  
Fracture Toughness Test ◽  
Geometrical Condition ◽  
Stress Criterion ◽  
Toughness Test ◽  
Fracture Assessment ◽  
Geometrical Discontinuity ◽  
Weibull Stress

Recently the Weibull stress is used as a fracture driving force parameter in fracture assessment. The Weibull stress is derived from a statistical analysis of local instability of micro cracks leading to brittle fracture initiation. The critical Weibull stress is expected to be a critical parameter independent of the geometrical condition of specimens. Fracture toughness test using 3-point bending and tensile tests of welded joint specimens with geometrical discontinuity were conducted in order to study the applicability of fracture assessment procedure based on Weibull stress criterion. Steel plates prepared for this study had tensile strength of 490 MPa for structural use. Two kinds of welded joint specimens, “one-bead welded joint” and “multi-pass welded joint” were prepared for fracture toughness test by using gas metal are welding. In tensile test specimen, corner flaws were introduced at the geometrical discontinuity part at where stress concentration is existed. Three dimensional elastoplastic finite element analyses were also carried out using the welded joint specimen models in order to calculate the Weibull stress. The critical loads for brittle fracture predicted by the Weibull stress criterion from CTOD test results of one-bead and multi-pass welded joint specimens show fairly good agreement with experimental results of welded joint specimens with geometrical discontinuity.

scholarly journals Strength of welded joint sunder quasi -brittle fracture

2020 ◽  
Vol 1441 ◽  
pp. 012114
Author(s):  
M V Shakhmatov ◽  
E A Usmanova
Keyword(s):  
Brittle Fracture ◽  
Welded Joint

Experimental Study on the Welding Property of Different Gauge Laser Tailor-Welded Blanks

2011 ◽  
Vol 415-417 ◽  
pp. 838-841
Author(s):  
Wan Qiang Lu ◽  
Song Xue
Keyword(s):  
Experimental Study ◽  
Material Properties ◽  
Welded Joint ◽  
Sheet Forming ◽  
Manufacturing Cost ◽  
Tailor Welded Blanks ◽  
Microhardness And Microstructure ◽  
Welding Properties

Laser tailor-welded blanks is one of the widely used in automotive industries as it reduces manufacturing cost and weight and also improves the quality of the components. The effects of difference in material properties, welding properties on blank formability become important in various forming processes. In this study the welding property of different gauge laser tailor-welded blanks was observed in microhardness and microstructure aspect. The property effects on the formality of the tailor-welded blanks were discussed. That the laser welded joint is qualified to satisfy the demand of sheet forming.

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